You might want a boost bottle hooked to the top of your intake manifold. You can drill holes in the clutch arms, & a heavy spring, my red Hot Rod engine has alum arms drilled also. If you got a pumper carb it it is a copy WT-603 16mm Walbro. The best carb for that engine is a Walbro WT-813 w/ accel pump. The red head engine has a real Walbro HDA 19mm purge carb.
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Im not sure what the make of my carb is, all I know is that I was looking thru a list of parts this store had available for my bike and it said "HP Carb Kit" or something like that. How do I know if I have a accelerator pump? When I was looking for parts, I didn't see any carb's with a option for a accelerator pump. It came with the carb, HP airfilter, velocity stack (at least this is what I think it's called), a spacer and some gaskets. Now before I installed the carb, the holes on the front and the rear of the carb didn't really match up with the intake, and the velocity stack for the front of the carb, so I temp mounted the carb on the intake, traced the offset of the carb on the intake, i then grinded a small taper on the intake, rounded it off then I polished it up, so now when I mount the carb on the intake, it will be a perfect fit, and no bumps or corners. Also the intake didn't meet the cylinder very well so I did the same routine to my cylinder, it had to be opened up more, but I didn't pay attention to how big I was making it. I know I made the intake a bit larger to meet the carb, and I had to make the cylinder opening bigger to meet the intake. I hope this was okay to do?
Also I read somewhere that if I make my fuel line bigger, that would help a bit, so i git new fuel line thats 3/16" I.D. But I read somewhere else that when you buy a HP carb, you no longer need the second smaller clear looking line that gets ran along with the fuel line. But the carb has 2 fittings coming from it, so I'm not real sure which fitting to plug the fuel line into?
In addition, Whats going on with all those mods I keep see'ing everywhere? Like the stock exhaust mod? The porting of my intake? Do you have to worry about the balancing of the clutch and the flywheel when you lighten them? Also, what is this I keep reading about with the removing the head gasket to get more compression? Is this mod worth doing? One more question for you guy's, lol, does anyone know where I can pick up a frame for my X1 thats made of aluminum? Thanks for your help guy's..
Here's a link to the carb I have on my bike. It's not the exact kit I got, but the carb is the same. http://www.partsforscooters.com/Performance_carb_49cc?sc=9&category=425
Here's some pic's of my bike, and a couple of my carb.
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Yeah, lol, thats just my luck to get a "copy" of a good carb. So is it a decent carb? So does this carb have a accelerator pump? I noticed you didn't call it a accelerator pump when you refered to my carb, you called it a "fuel pump". Also, yes, I did notice the offset on the little plate, and I made sure that the little port lined up. I also drilled out that little hole on the manifold with a 1/8" bit. So was it good that I made sure that all the edges for the velocity stack, the carb, intake, and cylinder head all met up smoothly? Is the stock exhaust mod worth doing? Or is that for another bike?
Here's a pic of the gas tank and the fuel line without the return line hooked up. Should the return line be hooked up? The place I read it said it like this," If you have a HP carb, everyone knows you dont need the little clear return line anymore". So it made me think that I dont need it, but the new carb I got has the 2 fittings. And your saying my fuel line goes to the most bottom fitting, right?
Here's a pic of the gas tank and the fuel line without the return line hooked up. Should the return line be hooked up? The place I read it said it like this," If you have a HP carb, everyone knows you dont need the little clear return line anymore". So it made me think that I dont need it, but the new carb I got has the 2 fittings. And your saying my fuel line goes to the most bottom fitting, right?
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Yeah, I think I might get a Walbro WT-813 carb in the near future. My bike already had a aluminum manifold on it. I'm not sure what you mean by raising the exhaust port, and lowering the intake port, but what I did do is I held the intake and spacer with gaskets on my the intake port of the cylinder and temperary attached them to see how well theyy lined up (they didn't line up too well) and I took my Dremel with a grinding bit and grinded out the intake port on the cylinder until it was a perfectly smooth transition. I then drilled out the little hole on the intake and spacer (the little hole below where the air and gas go thru) into the cylinder to make sure it was a perfectly smooth transition too. I then lined up my carb and velocity stack onto the spacer and took the same steps as above to make sure those transitions were smooth also < is this what you mean by lowering the intake port? I did this same thing to the exhaust side of the cylinder, to make sure everything was in perfect alignment. I do know that when I grinded out the intake port and exhaust port I had to remove quite a bit of the port walls to get everything to line up right. Now, I didn't quite understane you when you saidIf you do like I did and get a Walbro WT-813, made for these type engines from dave'smotors, then you have to find an intake and all the other stuff.![]()
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Well, I thought about JB welding the slotted area in the manifold, but as you can see in the pics, I ended up making another plate. I also notched for the differences between the carb and intake.
I am wanting to mod my piston with putting those little windows in it, like the ported piston. Is it just as easy as cutting out a hole in the front, and back of the piston? Do they have to be in any specific area of the piston? Also, on my crank shaft where my piston rod connects to the crank shaft, I need to take that joint apart, but it looks like that joint is the only thing keeping the crank shaft together? How do I take the crank shaft apart? I need to clean and make that joint a lot smoother cuz right now it feels like its got crap inside it. Thanks so much for you guys help
I am wanting to mod my piston with putting those little windows in it, like the ported piston. Is it just as easy as cutting out a hole in the front, and back of the piston? Do they have to be in any specific area of the piston? Also, on my crank shaft where my piston rod connects to the crank shaft, I need to take that joint apart, but it looks like that joint is the only thing keeping the crank shaft together? How do I take the crank shaft apart? I need to clean and make that joint a lot smoother cuz right now it feels like its got crap inside it. Thanks so much for you guys help
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Here's a few more.....
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To me adapters offer another place for leaks to occur.......If I can eliminate that possibility I do it...Well, I thought about JB welding the slotted area in the manifold, but as you can see in the pics, I ended up making another plate. I also notched for the differences between the carb and intake.
I am wanting to mod my piston with putting those little windows in it, like the ported piston. Is it just as easy as cutting out a hole in the front, and back of the piston? Do they have to be in any specific area of the piston? Also, on my crank shaft where my piston rod connects to the crank shaft, I need to take that joint apart, but it looks like that joint is the only thing keeping the crank shaft together? How do I take the crank shaft apart? I need to clean and make that joint a lot smoother cuz right now it feels like its got crap inside it. Thanks so much for you guys help
Youll need a hydraulic press and heat to get the crank apart................
Dont window the piston like a reeded engine piston unless you plan on retrofitting a reedblock which isnt easy...........
You just drill 4 small holes 2 each side of the transfer port areas of the piston above the piston pin and below the lower ring.......You also reshape the sideskirts with two raised humps at the corners.........
I really cant beleive no-one knows what transfer ports are.......without them the fuel can never reach the combustion chamber from the bottom end..............The holes must be drilled accordingly or theyll never do their job as intended
Theres 3 kinds of ports in a piston ported engine.....Intake port,,exhaust port and two transfer ports.................
On the crank theres just two round pins..the way theyre installed is the pin is shrunken via liquid nitrogen and the crank weights are heated ,,when they come together and return to ambient temps the fit is tighter than normal...its not hard to warp a crank either...............
..without them the fuel can never reach the combustion chamber from the bottom end..............The holes must be drilled accordingly or theyll never do their job as intendedTheres 3 kinds of ports in a piston ported engine.....Intake port,,exhaust port and two transfer ports.................
On the crank theres just two round pins..the way theyre installed is the pin is shrunken via liquid nitrogen and the crank weights are heated ,,when they come together and return to ambient temps the fit is tighter than normal...its not hard to warp a crank either...............
I really cant beleive no-one knows what transfer ports are.....
Now who's saying they don't know what transfer ports are? I know what they are, just about every gas motor has a intake (the hole in the head that this connects to is the intake transfer port, and the exhaust has a transfer port on the rear or my head, meaning the 49cc ecgine.
Come on CAM2, can you tell me how to get the crank shaft apart and back together? And while your at it, lol, could you tell me exactly where to drill the holes in my piston for it's ports? PPPLLLLEEEZZZZZZZ?
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